Prime mover



June 9, 193 A. A? HQVSEPIAN PRIME MOVER Filed Sept. 29, 1930 2 Sheets-Sheet 1 Inventor A ltorney June 9, 1931. A. A. HOVSEPIAN 1,309,203

PRIME MOYER Filed Sept. 29, 1930 2 Sheets-Sheet 2 'IIIIIIA Invenlor A .A Hovsepa'an Allomey Patented June 9,1931

UNITED STATES PLATENTDJF F 16 ALFRED A. novsnrmn, on D EL-R YQoALIFORNIA PRIME Moy'iin Application filed September 29,319.30. Serial No. 485,253.?

This invention relates to prime movers and is particularly adapted for toy aeroplanes.

Another object of the invention is to provide a propellingmeans for toy aeroplanes 5 that is very simple in its operation, strong I compact and durable, that occupies the minimum of space, that is very simple in its a method of assembly and that is comparatively inexpensive to manufacture andvery easy to install.

With the foregoing and other objects in View, the invention consists of a novel construction, combination and arrangement of parts as will be hereinafter more specifically described and illustrated in the accompanying drawings, wherein is disclosed an embodiment of the invention, but it is to be under stood that changes, variations and modifications may be resorted to Without departing from the spirit and scope of the to appended.

In the drawlngs wherein like reference characters denote corresponding parts throughout the several views 25. Figure 1 is a side elevation of the prime mover in accordance with the present invention,

in the direction of the arrows,

plate,

Fig. 4 is a vertical section taken substantially on the line 4l4-of Fig.1 and looking in the direction of the arrows,

Fig. 5 is a detailed diametric sectional View taken substantially on the line 5-5 of Fig. 2. v Fig. 6 is a detailed vertical sectiontaken substantially on the line 6-6 of Fig. 1, and

Fig.7 is an end view of the device showing the fixed bracket on the end of the spindle.-

In the drawings-wherein for the purpose of illustration is shownthe preferred embodi-. ment of my invention, 8 indicates an elongated 4'5 polygonal spindle on one end of which is rigidly coupled a spider bracket 9 having a plurality of radiating legs 10 extending laterally from the spindle and formed with books 11 on the ends thereof. To the forward end of the spindle 8 are secured a pair of L claims herej I I I 21 having the cranks 22- thereof in'the space Fig. 2 is a vertical section taken substan tially on the line 2-2 of Fig. 1 and looking 'bracket 9.

shaped brackets 12, 13 having one leg of each bracket anch'oredto the spindle by means of a cord '14 wrapped about the spindle" and the legs of the bracket. The outstanding legs 15, 16 of the brackets 12, 13 -andformerly of the end of spindle8 are a pair'oflongitudinally spaced plates 17 18, that form bearing sup,

ports as will appear later." The plates are c secured to a the outstanding legs 15; 16 bymeans of long rivets 19, whichextend throughopenings in the spaced plate and the outstan'ding legs, as will clearly appear in Fig; 5 of n the drawings. 'Theplatesare placed apart by Y.

the sleeves 20 disposed about the intermediate 7 portions ofthe rivetsj'and the-.edgesef the sleeves bear againstthe confronting spaces of the bearing plates 17, 18. The plates 17 18 V are preferably of circular formation. l

J ournalled through the marginal portions i of the-bearingplates are plural crankshafts between the bearing plates17, 18. These crank shafts21 are radially spaced from'the spindle 8, the crank shafts 21 being preferably four in number, corresponding tothe number of legs 10 on thebracket 9. A drive portion thereof is journalled in openings 'in' the center of the forward bearing plate 17 while a portion thereof projects forwardly shaft 23 hasthe, rear'end 24c thereof mounted of the forward bearing plate 17 and has rigidly connectedon the forward end" thereof a propeller 2 5. The drive shaft" 23 may be" adapted for driving'oth'er objects besides the propeller 25. Moreover, the axis of the'drive shaft: 23 is on the center of the spindle 8. Be

tween the bearing plates 17 18 the drive shaft- '23 is also provided with a bell crank 26. 3

The crank'shafts' 21 are each formed with.

hooksf27 that project rearwardly from the 1" I 8 rear bearing plate 18 and are in longitudinal alinement withhooks Disposed edgewise in the space between". bearing plates 17 18 is aplate 29 prefer'ably in the shape of the ring and the center of this 7 ring is eccentricwith respect to the axis of spindle ;8 ,lthe"driveshaft 23 and the center of I .1 I I shafts 21. Thus it will be seen that when the propeller or drive shaft is rotated in one di- 0. 2 has been disclosed in considerable detail rection, a twisting actionon the plural crank shafts 21 will result, which in turn twists the elastic strands 3 1. When the twisting is comp'leted, the strands will untwist, thereby imparting motion to the drive shaft 23 through the medium of the eccentric plate 29.

The present embodiment of the invention merely for the purpose of exemplification, since in actual'practice it attains the features of advantage enumerated as desirable in the V 1 statement of the invention and the abovede scription. 1

supported on the spindle to turn the crank shaft, said twistable means extending longitudinally of the spindle for said eccentric plate mounted between the bearing plate.

Intestimony whereof I afiiX my signature.

ALFRED A. HOVSEPIAN.

Itis'to be understood that by describing I in detail herein any particular form, structure, or arrangement, it is not intended to limit theinvention beyond the terms of the several claims, or the requirements of the prior art.

Havingthus described my invention, wha I claimas new is 2- 1; A prime mover comprising "a spindle, an

eccentric plate vmounted on one end of the] spindle, a drive shaft journaled on the forward end of said spindle and having a crankthereon j ournelled to the eccentricplate, andtwistable means having one, end supported onthe spindle and the, other'end associated 7 with the eccentric plate for causing rotation twistablemeans'coupled to the crank shaft ofthe drive shaft. I V

Y 2. A prime mover comprising a spindle, a

pair of longitudinally spaced bearing plates rigidly connected to one end of the spindle, plural crank. shafts journalled through the plateshaving the cranks thereof-between the plates, a drive shaft j ournalled through the plates, a plate j ournalled to the cranks of the:

crank shafts and the cranks of the drive shaft eccentric to the drive shaft and spindle, and

and supported on the crank shaft. 7 V i 3. A prime mover comprising'a spindle, a pair of longitudinally spaced bearing plates rigidly connected to one end of the spindle, plural crank shafts journalled through the spindles to turn the plates having the cranks thereof between the plates, a drive shaft journalled through the plates, a plate journalled tothe cranks of the crank shafts and the cranks of the driveshaft eccentric to the drive shaft and spindle, twistable'means coupled toithe crank shaft a'nd 

